Introduce new ClassStorageNotFoundException for missing class storages

src/Psalm/Exception/ClassStorageNotFoundException.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Psalm\Exception;
+
+use InvalidArgumentException;
+
+/**
+ * To be thrown when a `\Psalm\Storage\ClassLikeStorage` for a given name could not be resolved.
+ */
+final class ClassStorageNotFoundException extends InvalidArgumentException
+{
+    private ?string $name = null;
+
+    public function setName(string $name): self
+    {
+        $this->name = $name;
+        return $this;
+    }
+
+    public function getName(): ?string
+    {
+        return $this->name;
+    }
+}

src/Psalm/Internal/Provider/ClassLikeStorageProvider.php

@@ -6,6 +6,7 @@
 
 use InvalidArgumentException;
 use LogicException;
+use Psalm\Exception\ClassStorageNotFoundException;
 use Psalm\Storage\ClassLikeStorage;
 
 use function strtolower;
@@ -40,7 +41,9 @@ public function get(string $fq_classlike_name): ClassLikeStorage
         $fq_classlike_name_lc = strtolower($fq_classlike_name);
         /** @psalm-suppress ImpureStaticProperty Used only for caching */
         if (!isset(self::$storage[$fq_classlike_name_lc])) {
-            throw new InvalidArgumentException('Could not get class storage for ' . $fq_classlike_name_lc);
+            throw (new ClassStorageNotFoundException(
+                'Could not get class storage for ' . $fq_classlike_name_lc)
+            )->setName($fq_classlike_name_lc);
         }
 
         /** @psalm-suppress ImpureStaticProperty Used only for caching */